Al-Qaeda’s Syrian wing, Jabhat al-Nusra, has turned on one of their traditional allies in Idlib Province, the US-backed Free Syrian Army wing called Division 13, accusing the group of planning to attack its own bases.

Both Syrian rebels and government allies reported multiple ceasefire violations over the weekend, each blaming the other side for all violations, but by and large the ceasefire held through the weekend, with fighting enormously down from pre-ceasefire levels.

Yesterday, the Syrian rebel faction the “High Negotiations Council” (HNC) announced that it intended to abide by the ceasefire deal announced by the US and Russia. Today, they have backed off of that, saying they support the idea in theory, but haven’t committed to it.